2021 source guide · Physics

NEET 2021 Physics Thermodynamics Questions

Use this page to connect the official 2021 paper with current Physics practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 119 verified questions →Check official NTA archive ↗

What to master

state variables, heat, work, thermodynamic processes and heat engines.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 1/5

Which statement correctly compares work with internal energy in thermodynamics?

A. Internal energy is a state function but work is path dependent
B. Work is a state function but internal energy is not
C. Both are state functions
D. Neither can change during a thermodynamic process

Example 2 · difficulty 1/5

Using the NCERT convention that work done by the system is positive, what is the sign of work when a gas expands against an external pressure?

A. Negative
B. Positive
C. Zero in every expansion
D. Undefined

Example 3 · difficulty 1/5

Using the convention ΔQ = ΔU + ΔW, what is the sign of ΔW during compression of a gas?

A. Positive because volume decreases
B. Always zero because pressure rises
C. Negative because work is done on the gas
D. Positive only in an adiabatic process

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Thermodynamics →

Frequently asked questions

Are these official NEET 2021 Physics Thermodynamics PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2021 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.